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MySQL InnoDB Cluster: how to handle performance issue on one member ?

  Sometimes when you are using a MySQL InnoDB Cluster, you might encounter some performance issue because one node becomes dramatically slow. Why ? First of all, why ? A node can apply the transactions slower than the other nodes for many different reasons. The most frequents are for example, slower disks (remember, it’s advised to have nodes with the … Read More


Reduce human interaction when using an asynchronous slave to a MySQL InnoDB Cluster

A MySQL replication topology can be very complex (never underestimate a DBA’s creativity). But it’s very frequent to use an asynchronous slave from your primary database to run reporting or logical backup… or any kind of read workload you need. It can also be used as delay slave for data restore purpose. Once you decided to provide HA to your … Read More


MySQL Team speaking at Percona Live Dublin 2017

From September 25th to 27th 2017, the MySQL engineers and community team will be speaking at Percona Live Europe in Dublin. MySQL is also part of the contributing sponsors. For the conference, we tried to bring new faces to the Community. Usually, it’s always the same famous team leaders speaking at the conferences, this time, it’s not. A lot of … Read More


MySQL Group Replication: read your own write across the group

Today is my last day in Asia (China and Taiwan), and between the sessions I had the time to code a small proof-of-concept for people that are asking how they could read their writes on all nodes and ensure the read consistency with their last write ? The usual (and easier) answer to this particular question is to read on … Read More


ProxySQL and MySQL 8.0.2 (la suite)

Recently I wrote a blog post on how to use ProxySQL with 8.0.2 dmr This blog post was related to the change we implemented in the Group Replication’s monitoring (performance_schema tables) and how sys schema should be changed to modify the view used by ProxySQL according. However, I used my labs machines that I was using for different purposes too … Read More


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